Graphics Programs Reference
In-Depth Information
Example 4-2. PDF objects used to build the page tree illustrated in
Figure 4-2
1 0 obj
Root node
<< /Type /Pages /Kids [2 0 R 3 0 R 4 0 R] /Count 7 >>
endobj
2 0 obj
Intermediate node
<< /Type /Pages /Kids [5 0 R 6 0 R 7 0 R] /Parent 1 0 R /Count 3 >>
endobj
3 0 obj
Intermediate node
<< /Type /Pages /Kids [8 0 R 9 0 R 10 0 R] /Parent 1 0 R /Count 3 >>
endobj
4 0 obj
Page 7
<< /Type /Page /Parent 1 0 R /MediaBox [0 0 500 500] /Resources << >> >>
endobj
5 0 obj
Page 1
<< /Type /Page /Parent 2 0 R /MediaBox [0 0 500 500] /Resources << >> >>
endobj
6 0 obj
Page 2
<< /Type /Page /Parent 2 0 R /MediaBox [0 0 500 500] /Resources << >> >>
endobj
7 0 obj
Page 3
<< /Type /Page /Parent 2 0 R /MediaBox [0 0 500 500] /Resources << >> >>
endobj
8 0 obj
Page 4
<< /Type /Page /Parent 3 0 R /MediaBox [0 0 500 500] /Resources << >> >>
endobj
9 0 obj
Page 5
<< /Type /Page /Parent 3 0 R /MediaBox [0 0 500 500] /Resources << >> >>
endobj
10 0 obj
Page 6
<< /Type /Page /Parent 3 0 R /MediaBox [0 0 500 500] /Resources << >> >>
endobj
Table 4-5. Entries in an intermediate or root page tree node (*denotes a required entry)
Key
Value type
Value
/Type
*
name
Must be
/Pages
.
/Kids
*
array of indirect references
The immediate child page-tree nodes of this node.
/Count
*
integer
The number of page nodes (not other page tree nodes) which are eventual
children of this node.
/Parent
indirect reference to page tree node
Reference to the parent of this node (the node of which this is a child).
Must be present if not the root node of the page tree.
In this tree, any page can be found at most two indirect references away from the root
node.
